diff --git a/source/app/InputStream.cpp b/source/app/InputStream.cpp
index ebc10d3..0559ea1 100755
--- a/source/app/InputStream.cpp
+++ b/source/app/InputStream.cpp
@@ -41,6 +41,7 @@ namespace plaYUVer
 InputStream::InputStream()
 {
   m_bInit = false;
+  m_bLoadAll = false;
   m_iErrorStatus = 0;
 
   m_pFile = NULL;
@@ -58,6 +59,7 @@ InputStream::InputStream()
   m_pcNextFrame = NULL;
   m_ppcFrameBuffer = NULL;
   m_uiFrameBufferSize = 2;
+  m_uiFrameBufferIndex = 0;
   m_uiAveragePlayInterval = 0;
 }
 
@@ -145,6 +147,7 @@ Bool InputStream::open( QString filename, UInt width, UInt height, Int input_for
     return m_bInit;
   }
 
+  m_uiFrameBufferSize = 2;
   getMem1D<PlaYUVerFrame*>( &m_ppcFrameBuffer, m_uiFrameBufferSize );
   for( UInt i = 0; i < m_uiFrameBufferSize; i++ )
   {
@@ -192,6 +195,7 @@ Bool InputStream::open( QString filename, UInt width, UInt height, Int input_for
   m_cStreamInformationString.append( QFileInfo( m_cFilename ).fileName() );
 
   seekInput( 0 );
+  //loadAll();
 
   m_cTimer.start();
   m_uiAveragePlayInterval = 0;
@@ -228,6 +232,7 @@ Void InputStream::close()
             << QString::number( 1000 / ( m_uiAveragePlayInterval + 1 ) )
             << " fps";
 
+  m_bLoadAll = false;
   m_bInit = false;
 }
 
@@ -292,6 +297,41 @@ Bool InputStream::guessFormat( QString filename, UInt& rWidth, UInt& rHeight, In
   return bRet;
 }
 
+Void InputStream::loadAll()
+{
+  if( m_ppcFrameBuffer )
+  {
+    for( UInt i = 0; i < m_uiFrameBufferSize; i++ )
+    {
+      if( m_ppcFrameBuffer[i] )
+        delete m_ppcFrameBuffer[i];
+      m_ppcFrameBuffer[i] = NULL;
+    }
+    freeMem1D<PlaYUVerFrame*>( m_ppcFrameBuffer );
+    m_ppcFrameBuffer = NULL;
+  }
+  m_uiFrameBufferSize = m_uiTotalFrameNum;
+  getMem1D<PlaYUVerFrame*>( &m_ppcFrameBuffer, m_uiFrameBufferSize );
+  for( UInt i = 0; i < m_uiFrameBufferSize; i++ )
+  {
+    m_ppcFrameBuffer[i] = new PlaYUVerFrame( m_uiWidth, m_uiHeight, m_iPixelFormat );
+    if( !m_ppcFrameBuffer[i] )
+    {
+      close();
+    }
+  }
+  m_uiFrameBufferIndex = 0;
+  m_pcCurrFrame = m_ppcFrameBuffer[m_uiFrameBufferIndex];
+  seekInput( 0 );
+  for( UInt i = m_uiFrameBufferIndex+1; i < m_uiFrameBufferSize; i++ )
+  {
+    readNextFrame();
+    setNextFrame();
+  }
+  m_bLoadAll = true;
+  seekInput( 0 );
+}
+
 Void InputStream::getDuration( Int* duration_array )
 {
   Int hours, mins, secs;
@@ -326,6 +366,11 @@ Void InputStream::readNextFrame()
     return;
   }
 
+  if( m_bLoadAll )
+  {
+    return;
+  }
+
 #ifdef USE_FFMPEG
   if( m_cLibAvContext.getStatus() )
   {
@@ -364,8 +409,12 @@ Void InputStream::setNextFrame()
   {
     m_pcCurrFrame = m_pcNextFrame;
     m_iCurrFrameNum++;
-    m_pcNextFrame = m_ppcFrameBuffer[!m_uiFrameBufferIndex];
-    m_uiFrameBufferIndex = !m_uiFrameBufferIndex;
+    m_uiFrameBufferIndex++;
+    if( m_uiFrameBufferIndex == m_uiFrameBufferSize )
+    {
+      m_uiFrameBufferIndex = 0;
+    }
+    m_pcNextFrame = m_ppcFrameBuffer[m_uiFrameBufferIndex];
   }
   else
   {
@@ -391,10 +440,18 @@ PlaYUVerFrame* InputStream::getCurrFrame()
 
 Void InputStream::seekInput( UInt64 new_frame_num )
 {
-  if( !m_pFile )
+  if( !m_pFile || new_frame_num < 0 || new_frame_num >= m_uiTotalFrameNum)
     return;
-  if( new_frame_num < 0 || new_frame_num >= m_uiTotalFrameNum )
+
+  m_iCurrFrameNum = new_frame_num - 1;
+
+  if( m_bLoadAll )
+  {
+    m_uiFrameBufferIndex = new_frame_num;
+    m_pcNextFrame = m_ppcFrameBuffer[m_uiFrameBufferIndex];
+    setNextFrame();
     return;
+  }
 #ifdef USE_FFMPEG
   if( m_cLibAvContext.getStatus() )
   {
@@ -409,7 +466,7 @@ Void InputStream::seekInput( UInt64 new_frame_num )
   }
   m_uiFrameBufferIndex = 0;
   m_pcCurrFrame = m_pcNextFrame = m_ppcFrameBuffer[m_uiFrameBufferIndex];
-  m_iCurrFrameNum = new_frame_num - 1;
+
   readNextFrame();
   setNextFrame();
   if( m_uiTotalFrameNum > 1 )
diff --git a/source/app/InputStream.h b/source/app/InputStream.h
index 721f99e..031a9c1 100755
--- a/source/app/InputStream.h
+++ b/source/app/InputStream.h
@@ -48,6 +48,7 @@ class InputStream
 private:
 
   Bool m_bInit;
+  Bool m_bLoadAll;
   Int m_iErrorStatus;
 
 #ifdef USE_FFMPEG
@@ -109,6 +110,8 @@ public:
   Bool guessFormat( QString filename, UInt& rWidth, UInt& rHeight, Int& rInputFormat, UInt& rFrameRate );
   Void getFormat( UInt& rWidth, UInt& rHeight, Int& rInputFormat, UInt& rFrameRate );
 
+  Void loadAll();
+
   Void readNextFrame();
 
   Bool writeFrame( const QString& filename );
diff --git a/source/app/plaYUVerApp.cpp b/source/app/plaYUVerApp.cpp
index ea1a5a3..7dc87e0 100644
--- a/source/app/plaYUVerApp.cpp
+++ b/source/app/plaYUVerApp.cpp
@@ -164,8 +164,8 @@ Void plaYUVerApp::loadFile( QString fileName )
   SubWindowHandle *interfaceChild = new SubWindowHandle( this );  //createSubWindow();
   if( interfaceChild->loadFile( fileName ) )
   {
+    statusBar()->showMessage( tr( "Loading file..." ) );
     mdiArea->addSubWindow( interfaceChild );
-    statusBar()->showMessage( tr( "File loaded" ), 2000 );
     interfaceChild->show();
     connect( interfaceChild->getViewArea(), SIGNAL( positionChanged(const QPoint &, PlaYUVerFrame *) ), this,
         SLOT( updatePixelValueStatusBar(const QPoint &, PlaYUVerFrame *) ) );
@@ -173,6 +173,7 @@ Void plaYUVerApp::loadFile( QString fileName )
 
     interfaceChild->zoomToFit();
     interfaceChild->getViewArea()->setTool( m_appTool );
+    statusBar()->showMessage( tr( "File loaded" ), 2000 );
   }
   else
   {
@@ -216,6 +217,17 @@ Void plaYUVerApp::format()
     m_pcCurrentSubWindow->loadFile( m_pcCurrentSubWindow->currentFile(), true );
 }
 
+Void plaYUVerApp::loadAll()
+{
+  if( m_pcCurrentSubWindow )
+  {
+    statusBar()->showMessage( tr( "Loading file into memory ..." ) );
+    m_pcCurrentSubWindow->getInputStream()->loadAll();
+    statusBar()->showMessage( tr( "File loaded" ), 2000 );
+  }
+}
+
+
 Void plaYUVerApp::closeActiveWindow()
 {
   SubWindowHandle *currSubWindow = activeSubWindow();
@@ -840,6 +852,11 @@ Void plaYUVerApp::createActions()
   m_arrayActions[SAVE_ACT]->setStatusTip( tr( "Save current frame" ) );
   connect( m_arrayActions[SAVE_ACT], SIGNAL( triggered() ), this, SLOT( save() ) );
 
+  m_arrayActions[LOAD_ALL_ACT] = new QAction( tr( "&Load All" ), this );
+  //m_arrayActions[LOAD_ALL_ACT]->setIcon( QIcon( ":/images/configuredialog.png" ) );
+  m_arrayActions[LOAD_ALL_ACT]->setStatusTip( tr( "Load sequence into memory (caution)" ) );
+  connect( m_arrayActions[LOAD_ALL_ACT], SIGNAL( triggered() ), this, SLOT( loadAll() ) );
+
   m_arrayActions[FORMAT_ACT] = new QAction( tr( "&Format" ), this );
   m_arrayActions[FORMAT_ACT]->setIcon( QIcon( ":/images/configuredialog.png" ) );
   m_arrayActions[FORMAT_ACT]->setStatusTip( tr( "Open format dialog" ) );
@@ -1003,7 +1020,9 @@ Void plaYUVerApp::createMenus()
   m_arrayMenu[FILE_MENU] = menuBar()->addMenu( tr( "&File" ) );
   m_arrayMenu[FILE_MENU]->addAction( m_arrayActions[OPEN_ACT] );
   m_arrayMenu[FILE_MENU]->addAction( m_arrayActions[SAVE_ACT] );
+  m_arrayMenu[FILE_MENU]->addSeparator();
   m_arrayMenu[FILE_MENU]->addAction( m_arrayActions[FORMAT_ACT] );
+  m_arrayMenu[FILE_MENU]->addAction( m_arrayActions[LOAD_ALL_ACT] );
   m_arrayMenu[FILE_MENU]->addSeparator();
   m_arrayMenu[FILE_MENU]->addAction( m_arrayActions[CLOSE_ACT] );
   m_arrayMenu[FILE_MENU]->addAction( m_arrayActions[EXIT_ACT] );
diff --git a/source/app/plaYUVerApp.h b/source/app/plaYUVerApp.h
index e61aa0c..d7f5236 100644
--- a/source/app/plaYUVerApp.h
+++ b/source/app/plaYUVerApp.h
@@ -59,6 +59,7 @@ private Q_SLOTS:
   void open();
   void save();
   void format();
+  void loadAll();
   void closeActiveWindow();
   void closeAll();
 
@@ -192,6 +193,7 @@ private:
     OPEN_ACT = 0,
     SAVE_ACT,
     FORMAT_ACT,
+    LOAD_ALL_ACT,
     CLOSE_ACT,
     CLOSEALL_ACT,
     EXIT_ACT,